發(fā)布時間：2018-04-17 01:20

  本文選題：隔膜 + 相轉(zhuǎn)化法��； 參考：《化工新型材料》2017年07期

【摘要】：為了改善鋰電隔膜的親液性和耐熱性,本研究采用聚苯醚樹脂為成膜材料,利用相轉(zhuǎn)化法制備了微孔鋰電隔膜,通過膜形貌和結(jié)構(gòu)表征、親液性和耐熱性測試對聚苯醚隔膜的基本性能進行研究,并將該隔膜裝配成鋰電池進行電化學性能表征。結(jié)果表明,聚苯醚隔膜顯示出發(fā)達的三維孔道結(jié)構(gòu),孔隙率達到68%,約為傳統(tǒng)聚烯烴膜的1.5倍;材料的良好親液性和高孔隙率結(jié)構(gòu)改善了聚苯醚隔膜的吸液性,其吸液率達到325%;該隔膜在160℃、60min的熱處理條件下未發(fā)生明顯的熱收縮。相對于市售聚乙烯隔膜,聚苯醚微孔隔膜所裝配鋰離子電池顯示出更優(yōu)的循環(huán)性能和倍率性能。
[Abstract]:In order to improve the lithiophilic and heat resistance of lithium electric separator, the microporous lithium electroseparator was prepared by phase inversion method using polyphenylene ether resin as the membrane material, and characterized by the morphology and structure of the membrane.The basic properties of poly (phenylene ether) membrane were studied by liquid and heat resistance tests. The membrane was assembled into a lithium battery for electrochemical characterization.The results showed that the polyphenylene ether membrane showed a developed three-dimensional pore structure with a porosity of 68, about 1.5 times that of the traditional polyolefin membrane, and the good hydrophilicity and high porosity structure of the material improved the liquid absorption of the membrane.The absorbency of the film reached 325%, and no obvious thermal shrinkage occurred under the heat treatment at 160 鈩，

本文編號：1761436